Some people oppose letting same-sex couples marry on the grounds that "children need a mother and father." John Corvino shows that this argument proceeds from what is not true (about child welfare) to what does not follow (about marriage law).

Dr. John Corvino, also known as the "Gay Moralist," is a writer, speaker, and philosophy professor at Wayne State University in Detroit. He is the co-author, with Maggie Gallagher, of the book Debating Same-Sex Marriage (Oxford Univ. Press, 2012).